diff --git a/webapp/package.json b/webapp/package.json
index 366522d..3b0c2dd 100644
--- a/webapp/package.json
+++ b/webapp/package.json
@@ -11,6 +11,7 @@
   "dependencies": {
     "compression": "^1.7.1",
     "date-fns": "^2.16.1",
+    "dompurify": "^2.2.2",
     "isomorphic-fetch": "^3.0.0",
     "lodash": "^4.17.20",
     "node-fetch": "^2.6.1",
diff --git a/webapp/src/components/Article.svelte b/webapp/src/components/Article.svelte
index 12da966..56d872a 100644
--- a/webapp/src/components/Article.svelte
+++ b/webapp/src/components/Article.svelte
@@ -1,13 +1,41 @@
 <script>
+  import DOMPurify from "dompurify";
+  import { onMount } from "svelte";
   import StoryInfo from "../components/StoryInfo.svelte";
+
   export let story;
 
   let host = new URL(story.url || story.link).hostname.replace(/^www\./, "");
+  let html;
+
+  onMount(() => {
+    html = DOMPurify.sanitize(story.text);
+  });
 </script>
 
 <style>
+  .article :global(h1),
+  .article :global(h2),
+  .article :global(h3),
+  .article :global(h4),
+  .article :global(h5),
+  .article :global(h6) {
+    margin: 0 0 0.5em 0;
+    font-weight: 400;
+    line-height: 1.2;
+  }
+
+  .article :global(h1) {
+    font-size: 2rem;
+  }
+
+  @media only screen and (min-device-width: 320px) and (max-device-width: 480px) {
+    .article :global(h1) {
+      font-size: 1.5rem;
+    }
+  }
   .article-title {
-    text-align: justify;
+    text-align: left;
   }
   .article-header {
     padding: 0 0 1rem;
@@ -41,12 +69,14 @@
   <header class="article-header">
     <h1 class="article-title">{story.title}</h1>
     {#if story.url}
-      <div>source: <a href={story.url}>{host}</a></div>
+      <div>source: <a class="article-source" href={story.url}>{host}</a></div>
     {/if}
-    <StoryInfo class="article-byline" {story} />
+    <section class="article-info">
+      <StoryInfo {story} />
+    </section>
   </header>
 
   <section class="article-body">
-    {@html story.text}
+    {@html html}
   </section>
 </article>
diff --git a/webapp/src/components/Comment.svelte b/webapp/src/components/Comment.svelte
index be623f7..b343949 100644
--- a/webapp/src/components/Comment.svelte
+++ b/webapp/src/components/Comment.svelte
@@ -1,13 +1,23 @@
 <script>
+  import DOMPurify from "dompurify";
+  import { onMount } from "svelte";
+
   import Time from "../components/Time.svelte";
 
   export let story;
   export let comment;
   export let showComments = true;
-  const author = (comment.author || "").replace(" ", "");
-  export let id = `${author}-${comment.date}`;
 
-  export function toggleComments() {
+  let author = (comment.author || "").replace(" ", "");
+  let id = `${author}-${comment.date}`;
+
+  let html;
+
+  onMount(() => {
+    html = DOMPurify.sanitize(comment.text);
+  });
+
+  function toggleComments() {
     showComments = !showComments;
   }
 </script>
@@ -87,7 +97,7 @@
   </header>
 
   <section class={showComments ? 'comment-text' : 'comment-text is-collapsed'}>
-    {@html comment.text}
+    {@html html}
   </section>
 
   {#if !showComments}
diff --git a/webapp/src/components/Nav.svelte b/webapp/src/components/Nav.svelte
index fc95831..513bb24 100644
--- a/webapp/src/components/Nav.svelte
+++ b/webapp/src/components/Nav.svelte
@@ -28,13 +28,11 @@
 </script>
 
 <style>
-  .has-highlight,
   [aria-current] {
     position: relative;
     display: inline-block;
   }
 
-  .has-highlight::after,
   [aria-current]::after {
     position: absolute;
     content: "";
@@ -72,7 +70,6 @@
   .navigation-item {
     list-style: none;
   }
-  .navigation-text,
   .navigation-link {
     text-decoration: none;
     padding: 1em 0.5em;
@@ -82,7 +79,8 @@
     line-height: 2;
     margin: 1em;
     vertical-align: middle;
-    width: 15rem;
+    width: 20rem;
+    max-width: 50vw;
   }
 </style>
 
@@ -94,7 +92,9 @@
           class="navigation-link"
           aria-current={segment === undefined ? 'page' : undefined}
           rel="prefetch"
-          href=".">News</a>
+          href=".">
+          {#if segment === undefined}Qot.{:else}&larr; News feed{/if}
+        </a>
       </li>
     </ul>
     <form action="/search" method="GET" rel="prefetch" role="search">
@@ -108,11 +108,5 @@
         placeholder="Search..."
         on:keypress={handleSearch} />
     </form>
-    <ul class="navigation-list">
-      <li class="navigation-item">
-        <span
-          class="navigation-text {segment !== undefined ? 'has-highlight' : undefined}">Qot.</span>
-      </li>
-    </ul>
   </div>
 </nav>
diff --git a/webapp/src/components/StoryInfo.svelte b/webapp/src/components/StoryInfo.svelte
index 3881646..63e41f2 100644
--- a/webapp/src/components/StoryInfo.svelte
+++ b/webapp/src/components/StoryInfo.svelte
@@ -6,10 +6,10 @@
 <Time date={story.date} />
 {#if story.author && story.author_link}
   by
-  <a href={story.author_link}>{story.author}</a>
-{:else if story.author}by {story.author}{/if}
+  <a class="author" href={story.author_link}>{story.author}</a>
+{:else if story.author}by <span class="author">{story.author}</span>{/if}
 on
-<a href={story.link || story.url}>{story.source}</a>
+<a class="source" href={story.link || story.url}>{story.source}</a>
 {#if story.score}&bull; {story.score} points{/if}
 {#if story.num_comments}
   &bull;
diff --git a/webapp/static/global.css b/webapp/static/global.css
index 0e2b9a9..649af28 100644
--- a/webapp/static/global.css
+++ b/webapp/static/global.css
@@ -9,25 +9,11 @@ body {
   margin-bottom: 50vh;
 }
 
-h1,
-h2,
-h3,
-h4,
-h5,
-h6 {
-  margin: 0 0 0.5em 0;
-  font-weight: 400;
-  line-height: 1.2;
-}
-
-h1 {
-  font-size: 2em;
-}
-
 a {
   color: inherit;
 }
 
+pre,
 code {
   font-family: menlo, inconsolata, monospace;
   font-size: calc(1em - 2px);
@@ -36,3 +22,8 @@ code {
   padding: 0.2em 0.4em;
   border-radius: 2px;
 }
+
+pre {
+  max-width: 100%;
+  overflow: auto;
+}
diff --git a/webapp/yarn.lock b/webapp/yarn.lock
index 56a3188..0cb41a9 100644
--- a/webapp/yarn.lock
+++ b/webapp/yarn.lock
@@ -779,6 +779,11 @@ domain-browser@^1.1.1:
   resolved "https://registry.yarnpkg.com/domain-browser/-/domain-browser-1.2.0.tgz#3d31f50191a6749dd1375a7f522e823d42e54eda"
   integrity sha512-jnjyiM6eRyZl2H+W8Q/zLMA481hzi0eszAaBUzIVnmYVDBbnLxVNnfu1HgEBvCbL+71FrxMl3E6lpKH7Ge3OXA==
 
+dompurify@^2.2.2:
+  version "2.2.2"
+  resolved "https://registry.yarnpkg.com/dompurify/-/dompurify-2.2.2.tgz#cb8c2b1a2f3c8a0b565127504ae4eedec176a972"
+  integrity sha512-BsGR4nDLaC5CNBnyT5I+d5pOeaoWvgVeg6Gq/aqmKYWMPR07131u60I80BvExLAJ0FQEIBQ1BTicw+C5+jOyrg==
+
 duplexify@^3.4.2, duplexify@^3.6.0:
   version "3.7.1"
   resolved "https://registry.yarnpkg.com/duplexify/-/duplexify-3.7.1.tgz#2a4df5317f6ccfd91f86d6fd25d8d8a103b88309"